(pī) noun
1. The sixteenth letter in the Greek alphabet (Π, π): corresponding to English p. As a numeral it denotes 80.
2. This letter used to designate the ratio of the circumference of a circle to its diameter, 3.14159 +; also, this ratio. [Def. 2 <Gk. p(eriphereia) periphery]

(pī) noun Printing
Type that has been thrown into disorder; hence, any jumble or disorder.
—v.t. pied, pie·ing To jumble or disorder, as type. Also spelled pie. [Var. of PIE¹]